TLV431AIDBVRE4

Overview

The TLV431AIDBVRE4 is a low-voltage, adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an input voltage range of up to 7 V and provides an adjustable output voltage between 1.24 V and 6 V. The device features an initial accuracy of 1% and a temperature coefficient of 138 PPM/°C. It supports a maximum cathode current of 15 mA with a minimum operating current of 80 µA. The component functions reliably across a temperature range from -40°C to +125°C and is housed in an SOT-23-5 surface-mount package.

Feature Summary

• Adjustable reference voltage capability spanning from the internal 1.24 V reference up to 6 V via external resistors
• High thermal stability with specified performance across industrial and commercial temperature ranges
• Active output circuitry providing sharp turn-on characteristics suitable for low-voltage Zener diode replacement

Applications

• Isolated feedback circuits in 3 V to 3.3 V switch-mode power supplies when used with optocouplers
• Secondary-side regulation in flyback switch-mode power supplies (SMPS)
• On-board voltage and current references
• Voltage monitoring systems
• Comparator applications with integrated reference

Procurement Notes

Verify the specific suffix 'E4' indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the package type matches the required SOT-23-5 footprint for PCB layout compatibility. Ensure the ordering suffix aligns with the desired tape-and-reel quantity specifications for automated assembly processes.

Selection Notes

Select this component for designs requiring precise voltage referencing at low supply voltages where standard TL431 devices are unsuitable due to higher minimum operating voltage requirements. The 1% accuracy and wide temperature range make it appropriate for industrial control applications. Consider the 80 µA minimum current requirement when designing bias networks to ensure stable regulation under light load conditions.

Part Context

This part belongs to the TLV431 family of low-voltage adjustable shunt regulators. It serves as a direct functional replacement for traditional high-voltage shunt regulators like the TL431 but operates at significantly lower voltages. The 'E4' suffix typically denotes environmental compliance attributes defined by the manufacturer.

Replacement Considerations

Direct substitutes include the TLV431AIDBVR and TLV431AIDBVT from Texas Instruments, which share identical electrical specifications and pinout configurations. Cross-manufacturer equivalents should be evaluated for parameter matching regarding accuracy, temperature drift, and package dimensions.